Virtual Dice by Astor

As a prediction the magician puts two blue backed cards face down into a plexiglas holder. The spectator rolls the "virtual dice" twice. The magician takes the two red backed cards corresponding to the two numbers rolled out by the spectator using the "virtual dice", and places them face up into the plexiglas holder. When the magician turns the plexiglas holder over, the audience can see that the prediction cards match the chosen cards exactly.